#include <linux/spinlock.h>
#include <linux/ctype.h>
#include <linux/aer.h>
+#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
void
__lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
{
- /* Clear pending FCF rediscovery wait timer */
- phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
+ /* Clear pending FCF rediscovery wait and failover in progress flags */
+ phba->fcf.fcf_flag &= ~(FCF_REDISC_PEND |
+ FCF_DEAD_DISC |
+ FCF_ACVL_DISC);
/* Now, try to stop the timer */
del_timer(&phba->fcf.redisc_wait);
}
/* FCF rediscovery event to worker thread */
phba->fcf.fcf_flag |= FCF_REDISC_EVT;
spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
+ "2776 FCF rediscover wait timer expired, post "
+ "a worker thread event for FCF table scan\n");
/* wake up worker thread */
lpfc_worker_wake_up(phba);
}
}
/**
+ * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
+ * @vport: pointer to vport data structure.
+ *
+ * This routine is to perform Clear Virtual Link (CVL) on a vport in
+ * response to a CVL event.
+ *
+ * Return the pointer to the ndlp with the vport if successful, otherwise
+ * return NULL.
+ **/
+static struct lpfc_nodelist *
+lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp;
+ struct Scsi_Host *shost;
+ struct lpfc_hba *phba;
+
+ if (!vport)
+ return NULL;
+ ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ if (!ndlp)
+ return NULL;
+ phba = vport->phba;
+ if (!phba)
+ return NULL;
+ if (phba->pport->port_state <= LPFC_FLOGI)
+ return NULL;
+ /* If virtual link is not yet instantiated ignore CVL */
+ if (vport->port_state <= LPFC_FDISC)
+ return NULL;
+ shost = lpfc_shost_from_vport(vport);
+ if (!shost)
+ return NULL;
+ lpfc_linkdown_port(vport);
+ lpfc_cleanup_pending_mbox(vport);
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_CVL_RCVD;
+ spin_unlock_irq(shost->host_lock);
+
+ return ndlp;
+}
+
+/**
+ * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
+ * @vport: pointer to lpfc hba data structure.
+ *
+ * This routine is to perform Clear Virtual Link (CVL) on all vports in
+ * response to a FCF dead event.
+ **/
+static void
+lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
+{
+ struct lpfc_vport **vports;
+ int i;
+
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports)
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
+ lpfc_sli4_perform_vport_cvl(vports[i]);
+ lpfc_destroy_vport_work_array(phba, vports);
+}
+
+/**
* lpfc_sli4_async_fcoe_evt - Process the asynchronous fcoe event
* @phba: pointer to lpfc hba data structure.
* @acqe_link: pointer to the async fcoe completion queue entry.
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
struct Scsi_Host *shost;
- uint32_t link_state;
int active_vlink_present;
struct lpfc_vport **vports;
int i;
switch (event_type) {
case LPFC_FCOE_EVENT_TYPE_NEW_FCF:
case LPFC_FCOE_EVENT_TYPE_FCF_PARAM_MOD:
- lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
- "2546 New FCF found index 0x%x tag 0x%x\n",
- acqe_fcoe->index,
- acqe_fcoe->event_tag);
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
+ "2546 New FCF found/FCF parameter modified event: "
+ "evt_tag:x%x, fcf_index:x%x\n",
+ acqe_fcoe->event_tag, acqe_fcoe->index);
+
spin_lock_irq(&phba->hbalock);
if ((phba->fcf.fcf_flag & FCF_SCAN_DONE) ||
(phba->hba_flag & FCF_DISC_INPROGRESS)) {
spin_unlock_irq(&phba->hbalock);
break;
}
+
if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
/*
* If fast FCF failover rescan event is pending,
}
spin_unlock_irq(&phba->hbalock);
- /* Read the FCF table and re-discover SAN. */
- rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
+ if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
+ !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
+ /*
+ * During period of FCF discovery, read the FCF
+ * table record indexed by the event to update
+ * FCF round robin failover eligible FCF bmask.
+ */
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
+ LOG_DISCOVERY,
+ "2779 Read new FCF record with "
+ "fcf_index:x%x for updating FCF "
+ "round robin failover bmask\n",
+ acqe_fcoe->index);
+ rc = lpfc_sli4_read_fcf_rec(phba, acqe_fcoe->index);
+ }
+
+ /* Otherwise, scan the entire FCF table and re-discover SAN */
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
+ "2770 Start FCF table scan due to new FCF "
+ "event: evt_tag:x%x, fcf_index:x%x\n",
+ acqe_fcoe->event_tag, acqe_fcoe->index);
+ rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
+ LPFC_FCOE_FCF_GET_FIRST);
if (rc)
- lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
- "2547 Read FCF record failed 0x%x\n",
- rc);
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
+ "2547 Issue FCF scan read FCF mailbox "
+ "command failed 0x%x\n", rc);
break;
case LPFC_FCOE_EVENT_TYPE_FCF_TABLE_FULL:
break;
case LPFC_FCOE_EVENT_TYPE_FCF_DEAD:
- lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
"2549 FCF disconnected from network index 0x%x"
" tag 0x%x\n", acqe_fcoe->index,
acqe_fcoe->event_tag);
/* If the event is not for currently used fcf do nothing */
if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
break;
- /*
- * Currently, driver support only one FCF - so treat this as
- * a link down, but save the link state because we don't want
- * it to be changed to Link Down unless it is already down.
+ /* We request port to rediscover the entire FCF table for
+ * a fast recovery from case that the current FCF record
+ * is no longer valid if we are not in the middle of FCF
+ * failover process already.
*/
- link_state = phba->link_state;
- lpfc_linkdown(phba);
- phba->link_state = link_state;
- /* Unregister FCF if no devices connected to it */
- lpfc_unregister_unused_fcf(phba);
+ spin_lock_irq(&phba->hbalock);
+ if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
+ spin_unlock_irq(&phba->hbalock);
+ /* Update FLOGI FCF failover eligible FCF bmask */
+ lpfc_sli4_fcf_rr_index_clear(phba, acqe_fcoe->index);
+ break;
+ }
+ /* Mark the fast failover process in progress */
+ phba->fcf.fcf_flag |= FCF_DEAD_DISC;
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
+ "2771 Start FCF fast failover process due to "
+ "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
+ "\n", acqe_fcoe->event_tag, acqe_fcoe->index);
+ rc = lpfc_sli4_redisc_fcf_table(phba);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
+ LOG_DISCOVERY,
+ "2772 Issue FCF rediscover mabilbox "
+ "command failed, fail through to FCF "
+ "dead event\n");
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
+ spin_unlock_irq(&phba->hbalock);
+ /*
+ * Last resort will fail over by treating this
+ * as a link down to FCF registration.
+ */
+ lpfc_sli4_fcf_dead_failthrough(phba);
+ } else
+ /* Handling fast FCF failover to a DEAD FCF event
+ * is considered equalivant to receiving CVL to all
+ * vports.
+ */
+ lpfc_sli4_perform_all_vport_cvl(phba);
break;
case LPFC_FCOE_EVENT_TYPE_CVL:
- lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
"2718 Clear Virtual Link Received for VPI 0x%x"
" tag 0x%x\n", acqe_fcoe->index, acqe_fcoe->event_tag);
vport = lpfc_find_vport_by_vpid(phba,
acqe_fcoe->index - phba->vpi_base);
- if (!vport)
- break;
- ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ ndlp = lpfc_sli4_perform_vport_cvl(vport);
if (!ndlp)
break;
- shost = lpfc_shost_from_vport(vport);
- if (phba->pport->port_state <= LPFC_FLOGI)
- break;
- /* If virtual link is not yet instantiated ignore CVL */
- if (vport->port_state <= LPFC_FDISC)
- break;
-
- lpfc_linkdown_port(vport);
- lpfc_cleanup_pending_mbox(vport);
- spin_lock_irq(shost->host_lock);
- vport->fc_flag |= FC_VPORT_CVL_RCVD;
- spin_unlock_irq(shost->host_lock);
active_vlink_present = 0;
vports = lpfc_create_vport_work_array(phba);
* re-instantiate the Vlink using FDISC.
*/
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
+ shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
* Otherwise, we request port to rediscover
* the entire FCF table for a fast recovery
* from possible case that the current FCF
- * is no longer valid.
+ * is no longer valid if we are not already
+ * in the FCF failover process.
*/
+ spin_lock_irq(&phba->hbalock);
+ if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
+ spin_unlock_irq(&phba->hbalock);
+ break;
+ }
+ /* Mark the fast failover process in progress */
+ phba->fcf.fcf_flag |= FCF_ACVL_DISC;
+ spin_unlock_irq(&phba->hbalock);
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
+ LOG_DISCOVERY,
+ "2773 Start FCF fast failover due "
+ "to CVL event: evt_tag:x%x\n",
+ acqe_fcoe->event_tag);
rc = lpfc_sli4_redisc_fcf_table(phba);
- if (rc)
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
+ LOG_DISCOVERY,
+ "2774 Issue FCF rediscover "
+ "mabilbox command failed, "
+ "through to CVL event\n");
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
+ spin_unlock_irq(&phba->hbalock);
/*
* Last resort will be re-try on the
* the current registered FCF entry.
*/
lpfc_retry_pport_discovery(phba);
+ }
}
break;
default:
spin_unlock_irq(&phba->hbalock);
/* Scan FCF table from the first entry to re-discover SAN */
- rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST);
+ lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
+ "2777 Start FCF table scan after FCF "
+ "rediscovery quiescent period over\n");
+ rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
if (rc)
- lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
- "2747 Post FCF rediscovery read FCF record "
- "failed 0x%x\n", rc);
+ lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
+ "2747 Issue FCF scan read FCF mailbox "
+ "command failed 0x%x\n", rc);
}
/**
int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
struct lpfc_mqe *mqe;
+ int longs;
/* Before proceed, wait for POST done and device ready */
rc = lpfc_sli4_post_status_check(phba);
goto out_free_active_sgl;
}
+ /* Allocate eligible FCF bmask memory for FCF round robin failover */
+ longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
+ phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
+ GFP_KERNEL);
+ if (!phba->fcf.fcf_rr_bmask) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "2759 Failed allocate memory for FCF round "
+ "robin failover bmask\n");
+ goto out_remove_rpi_hdrs;
+ }
+
phba->sli4_hba.fcp_eq_hdl = kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
phba->cfg_fcp_eq_count), GFP_KERNEL);
if (!phba->sli4_hba.fcp_eq_hdl) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2572 Failed allocate memory for fast-path "
"per-EQ handle array\n");
- goto out_remove_rpi_hdrs;
+ goto out_free_fcf_rr_bmask;
}
phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
out_free_fcp_eq_hdl:
kfree(phba->sli4_hba.fcp_eq_hdl);
+out_free_fcf_rr_bmask:
+ kfree(phba->fcf.fcf_rr_bmask);
out_remove_rpi_hdrs:
lpfc_sli4_remove_rpi_hdrs(phba);
out_free_active_sgl:
lpfc_sli4_remove_rpi_hdrs(phba);
lpfc_sli4_remove_rpis(phba);
+ /* Free eligible FCF index bmask */
+ kfree(phba->fcf.fcf_rr_bmask);
+
/* Free the ELS sgl list */
lpfc_free_active_sgl(phba);
lpfc_free_sgl_list(phba);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff